THE SWALLOW-TAILShand at our leisure. This was a fascinating oc¬cupation, for at every movement of the gracefulbody a blue-green wave of metallic sheen wouldstart somewhere in the blackness of the velvetfront wings and surge and break over the hindwings in a shimmering glow that sent a thrillof delight to our color-loving senses. When wefollowed it around we found that though it flut¬tered lazily and aimlessly on, it knew quite wellwhat it was about and did not choose to let uscome too near. An interesting fact about the male of the spe¬cies is that he has the inner margin of the hindwine folded over, including scent-scales. Thisunique pocket full of perfume he undoubtedlycarries for the purpose of attracting and delight¬ing his lady-love. These butterflies, being very fond of nectar,visit many flowers and are especially useful incarrying the pollen baskets of the orchids.When we look at the weird flower called theDutchman's-pipe and see how curiously it is ar¬ranged to be an effective death-trap to smallerinsects, we feel that poetic justice is meted to theplant which produces it, when we find its largeround leaves eaten greedily by a robust cater¬pillar. The long projecting filaments give the 67